How it Works
Andrew Wireless Innovations Group
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MR1903D
user manual
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Andrew Wireless Innovations Group MR803D, MR853D, MR903D, MR1903D user manual

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User's Guide for MR803D, MR853D, MR903D and MR1903D miniRepeaters
TABLE OF CONTENTS
13.1. Functional Description of the Alarming-Interface 7
13.2. Output-Contact Configuration 7
13.3. Output-Contact Descriptions 8
1. Safety and Environmental
The electrical installation has to be performed in accordance with the safety regulations of the local authorities. Due to safety reasons, the electrical installation must be performed by qualified personnel only. The repeater must not be opened. The antennas of the repeater (integrated and / or external) have to be installed in a way that the regional and national RF exposure compliance requirements are met.
To comply with FCC RF exposure compliance requirements, the following antenna installation and device operating configurations must be satisfied: A separation distance of at least 20 cm must be maintained between the antenna of this device and all persons. RF exposure compliance may need to be addressed at the time of licensing, as required by the responsible FCC Bureau(s), including antenna co-location requirements of
1.1307(b)(3). Maximum permissible antenna gain is 12 dBi.
The miniRepeaters must only be used for
indoor applications!
2. Quick-Start Checklist
 Adjust channel(s); see chapter 10.  Mount the repeater; see chapter 6.  Install donor and coverage antennas.  Provide the repeater with power; see chapter 3.  Adjust the attenuation; see chapter 12.
Start the adjustment with the maximum attenuation and decrease attenuation until the ALC becomes active and the ALC alarm LED lights up. Then increase attenuation until the ALC alarm is inactive again.
or
 Select auto-setup; see chapter 12.  Check for alarms; see chapter 13.
3. RF and Power Connectors
G0783ZR
The miniRepeaters are equipped with two RF antenna ports: one antenna port that provides RF signals to/from mobile(s) and another antenna port on the opposite side of the miniRepeater that provides RF signals side to/from the BTS. Both of these connectors are SMA-Female. Two coaxial jumper cables are included with the miniRepeaters to provide N-female connection ports.
The socket for the DC supply is situated to the right of the “to/from BTS” RF connector. The power supply voltage for this connection point is 6.7 to 7.5 VDC, with a typical current draw of 1.7 amps. Only the Power Supply Unit (PSU) supplied with the MiniRepeater must be used.
An alternative method to provide power to the MiniRepeater is through the “to/from BTS” RF connector via the coaxial cable and a bias-T at the source. The DC socket of the repeater must not be connected if the unit is biased via the RF port.
M0041AMB.doc ID No 7164468
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4. Functional Description
The operation principle of the miniRepeaters is given with regard to the following block diagram.
Attenuation setting
manual automatic
User's Guide for
MR803D, MR853D, MR903D and MR1903D
6. Wall Mounting
Mounting bracket
Wall
E0783B0
Downlink signals from the BTS reach the internal duplexer through the “to/from BTS” RF port. Following the DL path from the duplexer, the RF signals are amplified by an LNA, which feeds the amplified signals to a mixer. The mixer converts the signals down to an intermediate frequency (IF), where a high rejection IF filter provides excellent selectivity to allow only the user’s frequency band to be repeated. After the IF filter, the signals are re-converted to the original frequency by means of another mixer. A final amplifier boosts the RF signals to the required output power.
After the final amplifier, a power detection circuit measures the output power and controls the gain through a closed loop feedback circuit. This feature is the automatic level control (ALC), which prevents the repeater from being overdriven and maintains intermodulation products and spectrum emissions below the regulation limits. Finally, the RF signals are fed to the external antenna through the duplexer and “to/from Mobile” RF port.
The uplink signals are received by the external antenna through the “to/from Mobile” RF port and are then fed to the duplexer. After the duplexer the RF circuitry and functionality is identical to the downlink path, which provides high rejection filtering for the desired operation frequency band and ALC functionality.
5. Cabinet Drawing
G0825Z8
miniRepeater
V1550_X03
The miniRepeater may only be mounted horizontally to a wall according to the above drawing to ensure the natural convection cooling. Do not
mount the miniRepeater to the
ceiling!
Always choose a mounting location that avoids condensation!
7. Mechanical Specification
Size H x W x D Weight 0.7 kg
Sealing Class IP30
8. Environmental and Safety Specifications
The environmental specifications are according to ETS 300 019 (European Telecommunication Standard) and the safety specifications are according to UL Std No 1950 and CAN/CSA­C22.2 No. 60950. For further details please ask your supplier.
9. 20 dB Bandwidth
MR803D, 18 MHz Filter 18.7 MHz MR853D, 1.5 MHz Filter 2.1 MHz
MR853D, 10 MHz Filter 10.7 MHz MR853D, 12.5 MHz Filter 13.2 MHz MR853D, 25 MHz Filter 24.7 MHz
MR903D, 6 MHz Filter 6.6 MHz MR1903D, 5 MHz Filter 7.0 MHz
MR1903D, 10 MHz Filter 11.0 MHz MR1903D, 15 MHz Filter 16.0 MHz
114 x 154 x 51.5 mm (4.5 x 6.1 x 2.0 inch)
20 dB bandwidth
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Andrew Wireless Systems GmbH * Industriering 10 * 86675 Buchdorf * Germany *
Phone: +49 9099 69-0 * Fax: +49 9099 69-930 *
email: WIsupport.germany@andrew.com * http://www.andrew.com
(p
)
(p
)
10. Start-Frequency Switch Settings
As described in chapter 4 Functional Description, the miniRepeaters utilise a high rejection filter to allow only the desired frequency band to be repeated. The miniRepeaters are available in different bandwidths with field adjustable start frequencies to support the desired frequency band of the user.
Two rotary switches, located on the side of the miniRepeater, are provided for setting the start frequency (SF) of the high rejection filter. The SF of the high rejection filter may be adjusted in either 200 or 250 kHz steps, dependent upon the miniRepeater model.
miniRepeater Model: MR803D
Start Frequency
Setting 1
0 0 796.00 841.00 0 1 796.20 841.20 0 2 796.40 841.40
… … … …
0 1 0 799.20 844.20 1 1 799.40 844.40
…
1
… …
F F
…
F F
Start Frequency
Setting 2
F
…
F
0 844.00 889.00 1 844.20 889.20
… … …
Following are tables that show the filter band-pass start frequencies corresponding to the switch settings. The following section will show tables of standard user settings.
SF setting 1
ositions 0 - F
SF setting 2
ositions 0 - F
Rotary switches for start-frequency setting
Frequency Step Size: 200 kHz
Start Frequency
UL (MHz)
799.00 844.00
… …
802.20 847.20 … …
847.00 892.00
Start Frequency
DL (MHz)
Start-frequency setting MR803D
miniRepeater Model: MR853D
Start Frequency
Setting 1
0 0 814.00 859.00 0 1 814.20 859.20 0 2 814.40 859.40
… … … …
0 1 0 817.20 862.20 1 1 817.40 862.40
… … … …
1
… … … …
F F
Start Frequency
Setting 2
F
F
0 862.00 907.00 1 862.20 907.20
… …
F F
Start-frequency setting MR853D
M0041AMB.doc ID No 7164468
Frequency Step Size: 200 kHz
Start Frequency
UL (MHz)
817.00 862.00
820.20 865.20
… …
865.00 910.00
Start Frequency
DL (MHz)
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User's Guide for
MR803D, MR853D, MR903D and MR1903D
miniRepeater Model: MR903D
Start Frequency
Setting 1
0 0 870.00 909.00 0 1 870.20 909.20 0 2 870.40 909.40
… … … …
0 1 0 873.20 912.20 1 1 873.40 912.40
… … … …
1
…
F F …
Start Frequency
Setting 2
F
F
…
0 918.00 957.00 1 918.20 957.20
… … …
F F
Frequency Step Size: 200 kHz
Start Frequency
UL (MHz)
873.00 912.00
876.20 915.20 … …
921.00 960.00
Start Frequency
DL (MHz)
miniRepeater Model: MR1903D
Start
Frequency
Setting 1
0 0 1848.00 1928.00 0 1 1848.25 1928.25 0 2 1848.50 1928.50
… … … …
0 1 0 1852.00 1932.00 1 1 1852.25 1932.25
… … … …
1
…
F F
…
F F
Start-frequency setting MR903D
Frequency Step Size: 250 kHz
Start Frequency
Setting 2
F
F
… … …
0 1908.00 1988.00 1 1908.25 1988.25
… … …
Start
Frequency
UL (MHz)
1851.75 1931.75
1855.75 1935.75
1911.75 1991.75
Start Frequency
DL (MHz)
Start-frequency setting MR1903D
Page 4
Andrew Wireless Systems GmbH * Industriering 10 * 86675 Buchdorf * Germany *
Phone: +49 9099 69-0 * Fax: +49 9099 69-930 *
email: WIsupport.germany@andrew.com * http://www.andrew.com
11. Standard Frequency Band Settings
The following tables show SF switch settings that would provide the appropriate passband frequency response required for specific SF bands. Note that the passband response may be different than the filter bandwidth of the miniRepeater. In these instances, the miniRepeater high rejection filter is used in conjunction with the duplexer response to narrow the actual band-pass response.
MR803D Available IF Filters: 18 MHz
IF Filter
Bandwidth
18 MHz 806 MHz 817 MHz 851 MHz 862 MHz 11 MHz 0 F 18 MHz 817 MHz 824 MHz 862 MHz 869 MHz 7 MHz 6 9 18 MHz 806 MHz 821 MHz 851 MHz 866 MHz 15 MHz 2 3 18 MHz 821 MHz 824 MHz 866 MHz 869 MHz 3 MHz 7 D 18 MHz 806 MHz 824 MHz 851 MHz 869 MHz 18 MHz 3 2
UL Start
Frequency
UL Stop
Frequency
DL Start
Frequency
DL Stop
Frequency
Passband
Bandwidth
SF 1
Setting
Standard frequency band setting MR803D
MR853D Available IF Filters: 1.5, 10, 12.5, and 25 MHz
IF Filter
Bandwidth
12.5 MHz 824 MHz 835 MHz 869 MHz 880 MHz A: 11 MHz 2 B
1.5 MHz 845 MHz 846.5 MHz 890 MHz 891.5 MHz AE: 1.5 MHz A 0
10 MHz 835 MHz 845 MHz 880 MHz 890 MHz B: 10 MHz 6 9 10 MHz 846.5 MHz 849 MHz 891.5 MHz 894 MHz BE: 2.5 MHz A 2
25 MHz 824 MHz 849 MHz 869 MHz 894 MHz 25 MHz 3 2
UL Start
Frequency
UL Stop
Frequency
DL Start
Frequency
DL Stop
Frequency
Passband
Bandwidth
SF 1
Setting
Standard frequency band setting MR853D
MR903D Available IF Filters: 6 MHz
SF 2
Setting
SF 2
Setting
IF Filter
Bandwidth
6 MHz 896 MHz 901 MHz 935 MHz 940 MHz 5 MHz 7 D 6 MHz 901 MHz 902 MHz 940 MHz 941 MHz 1 MHz 9 B 6 MHz 896 MHz 902 MHz 935 MHz 941 MHz 6 MHz 8 2
UL Start
Frequency
UL Stop
Frequency
DL Start
Frequency
DL Stop
Frequency
Passband
Bandwidth
SF 1
Setting
SF 2
Setting
Standard frequency band setting MR903D
M0041AMB.doc ID No 7164468
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MR1903D Available IF Filters: 5, 10, and 15 MHz
User's Guide for
MR803D, MR853D, MR903D and MR1903D
IF Filter
Bandwidth
5 MHz 1850 MHz 1855 MHz 1930 MHz 1935 MHz A1 5 MHz 1855 MHz 1860 MHz 1935 MHz 1940 MHz A2 5 MHz 1860 MHz 1865 MHz 1940 MHz 1945 MHz A3 5 MHz 1865 MHz 1870 MHz 1945 MHz 1950 MHz D 5 MHz 1870 MHz 1875 MHz 1950 MHz 1955 MHz B1 5 MHz 1875 MHz 1880 MHz 1955 MHz 1960 MHz B2 5 MHz 1880 MHz 1885 MHz 1960 MHz 1965 MHz B3 5 MHz 1885 MHz 1890 MHz 1965 MHz 1970 MHz E 5 MHz 1890 MHz 1895 MHz 1970 MHz 1975 MHz F 5 MHz 1895 MHz 1900 MHz 1975 MHz 1980 MHz C1 5 MHz 1900 MHz 1905 MHz 1980 MHz 1985 MHz C2 5 MHz 1905 MHz 1910 MHz 1985 MHz 1990 MHz C3
10 MHz 1850 MHz 1860 MHz 1930 MHz 1940 MHz A1 + A2 10 MHz 1855 MHz 1865 MHz 1935 MHz 1945 MHz A2+ A3 10 MHz 1860 MHz 1870 MHz 1940 MHz 1950 MHz A3 + D 10 MHz 1865 MHz 1875 MHz 1945 MHz 1955 MHz D+ B1 10 MHz 1870 MHz 1880 MHz 1950 MHz 1960 MHz B1 + B2 10 MHz 1875 MHz 1885 MHz 1955 MHz 1965 MHz B2+ B3 10 MHz 1880 MHz 1890 MHz 1960 MHz 1970 MHz B3 + E 10 MHz 1885 MHz 1895 MHz 1965 MHz 1975 MHz E+ F 10 MHz 1890 MHz 1900 MHz 1970 MHz 1980 MHz F + C1 10 MHz 1895 MHz 1905 MHz 1975 MHz 1985 MHz C1+ C2 10 MHz 1900 MHz 1910 MHz 1980 MHz 1990 MHz C2 + C3
15 MHz 1850 MHz 1865 MHz 1930 MHz 1945 MHz A 15 MHz 1870 MHz 1885 MHz 1950 MHz 1965 MHz B 15 MHz 1895 MHz 1910 MHz 1975 MHz 1990 MHz C
UL Start
Frequency
UL Stop
Frequency
DL Start
Frequency
DL Stop
Frequency
PCS
Block
SF 1
Setting
0 8 1 C 3 0 4 4 5 8 6 C 8 0 9 4 A 8
B C D 0 E 4
0 8
1 C
3 0
4 4
5 8
6 C
8 0
9 4 A 8 B C D 0
0 8
5 8 B C
SF 2
Setting
Page 6
Standard frequency band setting MR1903D
Andrew Wireless Systems GmbH * Industriering 10 * 86675 Buchdorf * Germany *
Phone: +49 9099 69-0 * Fax: +49 9099 69-930 *
email: WIsupport.germany@andrew.com * http://www.andrew.com
12. Attenuation Setting
The attenuation of the miniRepeater can be set by means of a rotary switch. There is a label on the miniRepeater that shows the possible positions of the rotary switch and the corresponding values of the attenuation. The attenuation can be set, using a small screwdriver, in the range from 0 dB to 20 dB in steps of 2 dB or “auto setup” may be selected.
When auto setup is selected, the miniRepeater will automatically set its gain to maximize RF performance. The downlink gain will be automatically set to operate the repeater at its maximum output power, while not exceeding the ALC limit. The uplink gain will be set to the value of the downlink path.
If the level of the BTS signal increases, the miniRepeater will decrease the gain in the downlink and uplink paths automatically. However, the miniRepeater will increase the gain again in timely intervals of 24 hours if the level of the BTS signal decreases.
Rotary switch for attenuation setting
13. Alarming and Supervision
13.1. Functional Description of the Alarming­Interface
For alarming and supervision, the miniRepeater is provided with an alarming interface represented by two LEDs and output contacts:
LED 1 LED 2
LEDs and output contacts
LED1: This three-colour LED provides visual
equipment status information:
off no power feed green normal operation condition orange hardware alarm (out of defined power-
window) or LO (Local Oscillator) does not lock
red temperature of repeater too high
LED2: This one-colour LED provides visual
off normal operation condition red ALC-Alarm, ALC active
13.2. Output-Contact Configuration
Output1 (TTL level)
Output2 (Optocoupler output)
Output3 (Optocoupler output)
information about the ALC-status (Automatic Level Control):
a3 GND b3 Heartbeat
Hardware-
b1
Alarm – C Hardware-
b2
Alarm – E
a1 ALC-Alarm – C a2 ALC-Alarm – E
Output-contact configuration
M0041AMB.doc ID No 7164468
Page 7
User's Guide for
MR803D, MR853D, MR903D and MR1903D
13.3. Output-Contact Descriptions
Output1: This is a transistor output for heartbeat
signalling. The heartbeat interval can be set in the 1-to-72-hours range.
+5
1kOhm
output voltage.......4.75 to 5.25
output current.......20 mA
Output2: This optocoupler output, which is signalling
the operating condition, represents the same functionality as LED1.
Collector-emitter voltage......50 V max
Collector current..................20 mA max
open power feed out of defined window
or LO-Alarm or temperature-alarm
close normal operation condition
Output3: This optocoupler output, which is signalling
the ALC condition, represents the same functionality as LED2.
0 not allowed 2 1 h A 24 h 1 not allowed 3 2 h B 30 h
4 3 h C 36 h 5 4 h D 48 h 6 5 h E 60 h 7 6 h F 72 h 8 12 h 9 18 h
Heartbeat-switch settings
Position of the rotary switch for setting of
Collector-emitter voltage......50 V max
Collector current..................20 mA max
open ALC-Alarm, ALC active close normal operation condition
14. Heartbeat Setting
In a remote monitoring system, heartbeat signalling is a very useful method to monitor whether the supervision connection to a device is still operational. Without heartbeat signalling, there would be no indication if the supervision connection failed.
The heartbeat interval can be set by means of a rotary switch, which is accessible on the top of the miniRepeater. Use a small screwdriver to turn the switch carefully to the position for the required interval (1 to 72 hours) according to the label in the cover.
15. List of Changes
miniRepeater with cover
Version Changes M0041AMA 07-Feb.-06
M0041AMB - Mikom GmbH
changed its name into Andrew Wireless Systems GmbH
- Chapter 1 changed
- Chapter 5 changed
- Chapter 7 changed
Release Date
21-Nov.-06
Page 8
Andrew Wireless Systems GmbH * Industriering 10 * 86675 Buchdorf * Germany *
Phone: +49 9099 69-0 * Fax: +49 9099 69-930 *
email: WIsupport.germany@andrew.com * http://www.andrew.com
© Copyright 2006 Andrew Wireless Systems GmbH All rights reserved.
All information contained in this manual has been revised thoroughly. Yet Andrew Wireless Systems accepts no liability for any omissions or faults.
Andrew Wireless Systems reserves the right to change all hard- and software characteristics without notice.
Names of products mentioned herein are used for identification purposes only and may be trademarks and / or registered trademarks of their respective companies.
No parts of this publication may be reproduced, stored in a retrieval system, transmitted in any form or by any means, electronical, mechanical photocopying, recording or otherwise, without prior written permission of the publisher.
Andrew Wireless Systems GmbH, 21-November-2006
M0041AMB.doc ID No 7164468
Page 9
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